<template>
<div class="login_container">
 <div class="login_box">
  <!-- 头像区域 -->
  <div class="avatar_box">
   <img src="../assets/logo.png" />
  </div>
  <!-- 登录表单区域 -->
  <el-form ref="loginFormRef" :model="loginForm" :rules="loginFormRules" label-width="0px" class="login_form">
   <!-- 用户名 -->
   <el-form-item prop="username">
    <el-input v-model="loginForm.username" prefix-icon="iconfont icon-user"></el-input>
   </el-form-item>
   <!-- 密码 -->
   <el-form-item prop="password">
    <el-input v-model="loginForm.password" prefix-icon="iconfont icon-3702mima" type="password"></el-input>
   </el-form-item>
   <!-- 按钮区域 -->
   <el-form-item class="btns">
    <el-button type="primary" @click="login">登录</el-button>
    <el-button type="info" @click="resetLoginForm">重置</el-button>
   </el-form-item>
  </el-form>
 </div>
</div>
</template>

<script>
export default {
  data () {
    return {
      // 这是登录表单的数据绑定对象
      loginForm: {
        username: 'admin',
        password: '123456'
      },
      // 这表单的验证规则对象
      loginFormRules: {
        // 验证用户名是否合法
        username: [
          { required: true, message: '请输入登录名称', trigger: 'blur' },
          { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
        ],
        // 验证密码是否合法
        password: [
          { required: true, message: '请输入登录密码', trigger: 'blur' },
          { min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur' }
        ]
      }
    }
  },
  methods: {
    // 点击重置按钮，重置登录表单
    resetLoginForm () {
      // console.log(this);
      this.$refs.loginFormRef.resetFields()
    },
    login () {
      this.$refs.loginFormRef.validate(async valid => {
        if (!valid) return
        const { data: res } = await this.$http.post('login', this.loginForm)
        if (res.meta.status !== 200) return this.$message.error('登录失败！')
        this.$message.success('登陆成功')
        window.sessionStorage.setItem('token', res.data.token)
        this.$router.push('/home')
      })
    }
  }
}
</script>

<style lang="less" scoped="scoped">
.login_container {
 background-color: #2b4b6b;
 height: 100%;
}
.login_box{
 width: 450px;
 height: 300px;
 background-color: #fff;
 border-radius: 3px;
 position: absolute;
 left: 50%;
 top: 50%;
 transform: translate(-50%, -50%);

 .avatar_box{
  height: 130px;
  width: 130px;
  border: 1px solid #eee;
  border-radius: 50%;
  padding: 10px;
  box-shadow: 0 0 10px #ddd;
  position: absolute;
  left: 50%;
  transform: translate(-50%, -50%);
  background-color: #fff;
  img{
   width: 100%;
   height: 100%;
   border-radius: 50%;
   background-color: #eee;
  }
 }
}

.login_form{
 position: absolute;
 bottom: 0;
 width: 100%;
 padding: 0 20px;
 box-sizing: border-box;
}

.btns{
 display: flex;
 justify-content: flex-end;
}
</style>
